Fastener for window-sash, doors, &amp;c.



No. 821,090. PATENTED MAY 22, 1906. O A. DAHL. PASTENER FOR WINDOW SASH, DOORS, dzc.

APPLICATION FILED JAN.4,1906.

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No. 821,090. PATENTED MAY 22, -1906. 0. A. DAHL.

FASTBNBR FOR WINDOW SASH, DOORS, &c.

APPLICATION FILED JAN. 4, 1906.

UNITED STATES- PAT ENT OFFICE.

FASTENER FOR WlNDOW-SASH, DOORS, 81.0.

Specification of Letters Patent.

Patented May 22, 1906.

Application filed January 4,1906. Serial No. 294,553-

To all whom it may concern:

Be it known that I, OLAUS A. DAIIL, a citizen of the United States, residing at Nash, in the county of Walsh and State of North Dakota, have invented certain new and useful Improvements in Fasteners for Window- Sash, Doors, &c.; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide a simple, convenient, and eflicient latch for window-sash and for doors and the like.

To tlr's end it consists of the novel devices and combinations of devices hereinafter described, and defined in the claim.

The invention is illustrated. in the accom panying'drawings, wherein like characters indicate like parts throughout the several vi ews.

Referring to the drawings, Figure 1 is a view in elevation with parts broken away, showing one of my improved latches applied to a storm-door, the same being viewed from the interior of a structure. Fig. 2is avertical section taken on the line 00 00 of Fig. 1. Fig. 3 is a horizontal section takenon the line 00 of Fig. 1. Fig. 4 is a detail view in side elevation, showing one of the improved latches employed in the construction illustrated in Figs. 1 to 3, inclusive. Fig. 5 is a vertical section on the line 90 00 of Fig. 4. Fig. 6 is an elevation with parts broken away, showing the improved latch applied to support the lower sash of a window, the same being viewed. from the interior of a building. Fig. 7 is a vertical section taken on the line 00 x of Fig. 4. Fig. 8 is a detail taken on the line m 90 of Fig. 7. Fig. 9 is a detail view in elevation, showing one of the latches employed in the construction illustrated in Figs. 6 to 8, inclusive; and Fig. 10 is a section taken on the line 00 at of Fig. 9.

Referring first to the construction illustrated in Figs. 1 to 3, inclusive, the numeral 1 indicates the door-frame, and the numeral 2 an ordinary d 001' hinged thereto in the usual way. The numeral 3 indicates a storm-door which is hinged to said door-frame in the usual way. In this instance I have shown my improved latch as applied to hold the storm door closed, and to this end the said door is shown as provided with a latch-engaging bail 4, that projects inward from the intermediate portion of the free edge thereof and when the door is closed is engaged and held by a spring-pressed latch-lever 5, pivoted at 6 to a bearing-bracket 7, rigidly secured, preferably by screws, to the door-frame 1. At its free end the latch-lever 5 is provided with a camnose, shown as formed by approximately V-shaped cam-flanges 8. The other end of the lever 5 is preferably bent to overlap with the flanged head of the bracket 7, and a coiled spring 9, inclosed within the said overlapping flanges, bears against that end of the lever 5 and yieldingly holds the said lever against a stop 10 on the head of said bracket 7.

The parts are so related that when the storm-door is swung closed the bail 4 will press against the outer incline of the cam flanges 8 and force its way past and into engagement with the inner bevel of the camflanges, substantially as shown in Fig. 5. When the parts are thus engaged, the stormdoor will be held closed with considerable force, but may nevertheless be forced open by outward pressure thereon sufficient to overcome the spring 9, and thereby cam the bail 4 outward past the cam-flanges 8. The spring .9 by its yielding pressure on the lever 5 causes the cam-flanges 8 to draw inward on the bail 4, and thereby keep the storm-door drawn inward and closely closed against the door-frame.

In the construction illustrated in Figs. 6, 7, and 8 the numeral 11 indicates a, windowframe, and the numerals 12 and 13 indicate, respectively, the upper and lower windowsash. In this illustration of the application of the improved latch the latch-bail 4 is applied to the upper portion of the lower window-sash 13, and the bracket 7, which supports the latch 5, is shown as secured to a block 14, which in turn is nailed or otherwise secured to one side of the window-frame 11, directly over said latch-bail 4. The latch used in this arrangement is, except for minor details of construction, the same as that previously described. The lever 5 has the same cam-flanges 8 and is subject to the spring 9 and is pivoted to the bracket 7 at 6. The bracket 7, however, is provided with flanges at its extreme upper portion instead of at one 6, 7, and 8 is especially adapted for use to support window-sash which are not supported by weights; but such latches may of course be applied to sash that are counterbalanced, or nearly so, by means of weights. The latch thus applied will operate without being engaged by the hand at any time. When the Window-sash is forced upward, the bail 4 will force one into engagement with the beveled nose or flange of the lock-lever, and the latter will hold the window-sash in its elevated position. To disengage the parts of the latch, it is only necessary to pull downward on the Window-sash, so as to disengage the latch-bail 4 from the cam-flanges 8 of the said lock-lever 5.

The latch described is of very small cost and is thought to be convenient and eiflcient for the purposes had in view. The latch described, it will be understood, is also well adapted for use connected to secure in position storm-sash, screens, and various other separable parts.

What I claim, and desire to secure by Letters Patent of the United States, is as follows:

A latch comprising a bracket 7 pressed from a single piece of metal and provided with laterally-turned flanges, a latch 5 pressed from another piece of metal and provided with twoWay beveled cam-flanges 8, and with laterally-turned flanges, the said flanges of the bracket 7 and latch 5 overlapping one With the other thus affording a casing, a spring 9 Within said casing compressed between the bracket 7 and the latch 5, and a latch-bail engageable with said cam-flanges 8, substantially as described.

In testimony whereof I afl'iX my signature in presence of two Witnesses.

OLAUS A. DAHL.

Witnesses:

MALIE HoEL, FRANK D. MERCHANT. 

